Alfine making funny noises... is it wrecked?

I got about 100 miles on my alfine now and i think i have a problem. I'm not sure if this was a problem initially because I honestly only rode the bike in 1 - 3 roaming around snow/mud stuff but now alot of the snow is gone and I can really get some speed on the pugs and I've started using some of the higher gears. No matter how much I adjust the cable I can't get gears 5, 6, 7 to shift right. Seems like these gears don't shift as smoothly or quietly and if I back pedal in these gears it is noisy. When I go forward it seems fine, no grinding but if I backpedal its not cool so I try not to stop pedaling in these gears to reduce any grinding or whatever its doing or I'll shift down into 3/4 to coast since these gears remain silent.

Any thoughts/ideas? I feel like I should tear down my new hub and clean/grease it up. Maybe theres some crud leftover during manufacturing?

there's no need for backpedaling, as far as I know.
I'll do some backpedaling on mine, and listen very carefully.
I have a SG-501.
I've noticed that 6th gear is very sensetive to cable (mis)adjustment. Strange click and tick noises whn the cable is just a little of.

Babelfish transate:
An easy clicking noise in the 8-Gang-Nabe is caused by pawls, which are not latched. We developed our hubs in such a way that no free-wheel with scolded between two courses develops, even if the hub is not correctly adjusted 100%. The pawl of the lower course is thus still available, if the higher course is not yet latched. This clicking in the 8-Gang-Nabe is a large safety plus. With some 8-Gang-Naben you can hear a clicking of the pawls. These clicking noises can likewise hear you, if them the 8-Gang-Nabe without In 4. or a higher course backwards step resignation brake.